1dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/* 2dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Copyright 2012 Sebastian Annies, Hamburg 3dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 4dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Licensed under the Apache License, Version 2.0 (the License); 5dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * you may not use this file except in compliance with the License. 6dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * You may obtain a copy of the License at 7dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 8dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * http://www.apache.org/licenses/LICENSE-2.0 9dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 10dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Unless required by applicable law or agreed to in writing, software 11dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * distributed under the License is distributed on an AS IS BASIS, 12dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * See the License for the specific language governing permissions and 14dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * limitations under the License. 15dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 16dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupackage com.googlecode.mp4parser.util; 17dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 18dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.io.EOFException; 19dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.io.IOException; 20dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteBuffer; 21dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.channels.ByteChannel; 22dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 23dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/** 24dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Creates a <code>ReadableByteChannel</code> that is backed by a <code>ByteBuffer</code>. 25dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 26dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupublic class ByteBufferByteChannel implements ByteChannel { 27dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu ByteBuffer byteBuffer; 28dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 29dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public ByteBufferByteChannel(ByteBuffer byteBuffer) { 30dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu this.byteBuffer = byteBuffer; 31dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 32dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 33dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public int read(ByteBuffer dst) throws IOException { 34dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu byte[] b = dst.array(); 35dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu int r = dst.remaining(); 36dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu if (byteBuffer.remaining() >= r) { 37dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu byteBuffer.get(b, dst.position(), r); 38dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return r; 39dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } else { 40dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu throw new EOFException("Reading beyond end of stream"); 41dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 42dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 43dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 44dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public boolean isOpen() { 45dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return true; 46dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 47dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 48dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public void close() throws IOException { 49dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 50dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 51dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public int write(ByteBuffer src) throws IOException { 52dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu int r = src.remaining(); 53dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu byteBuffer.put(src); 54dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return r; 55dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 56dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu} 57